Romney's PAC--The Commonwealth--announced some more signings during this free agent frenzy leading into 2007:

Two top economists and President Bush’s tax cut architects have agreed to join Governor Mitt Romney’s Commonwealth PAC the organization announced today. Glenn Hubbard and Greg Mankiw will act as co-chairs of the PAC’s Economic Advisory Council. Additionally, Cesar Conda has agreed to be a Senior Economic Advisor for the PAC.

“Glenn Hubbard and Greg Mankiw are both brilliant economists,” Romney said. “Cesar Conda also brings a wealth of expertise in economic policy development and implementation. One of the messages voters sent to Washington Republicans during this last election cycle was to stop spending like Democrats. In addition, history has shown us time and again that allowing the American people to keep more of their hard-earned money through tax cuts spurs economic growth. Greg, Glenn and Cesar share my views of low taxes and limited government and together we will work to help the Republican Party return to those conservative principles. I’m glad they have joined the team.”

Also, Romney is gearing up for South Carolina with another hire:

Governor Mitt Romney’s Commonwealth PAC today announced that long-time South Carolina political strategist J. Warren Tompkins, III has joined the PAC in a Senior Advisor for the Southeast region.

“Few people know the Southeastern political landscape better than Warren Tompkins,” Romney said. “I am pleased that he has joined our team. For nearly 20 years he has been an influence in South Carolina and the region.”